1. verb. To be sexually unfaithful either breaking a promise of sexual fidelity or lying about sexual encounters.

2. verb. To surruptitiosly copy answers from another student in school in order to hide the lack of knowledge of the curriculum.

3. proper noun "The Cheat". An animated character from www.homestarrunner.com who is characterized by his short yellow body and unintelligible speech.

4. noun. In video games, a code (whether secret or published) or a series of movements (whether intentionally programmed or a glitch or coded by the player) input by the player in order to achieve one or more of the following:

a. enhance one's abilities in game play such as unlimited ammunition, enhanced or normally unavailable weapons, or God Mode;

1.A. any form of sexual contact with another person
"i said i was dating her, but then i fooled around with her sister. she told of my cheat(ing)"
1.B to say you'll not do something for the other person's feelings and then do it behind their back.
"hey honey, I won't smoke a cigarette again!" *5 seconds later, smoking* "yeah sure, you cheater!

2.A. "hey, tommy, lemme see that paper!"

2.B. sites like philosophypapers.com and such, or places that you can get the answers.

When someone does something that they wouldn't do if their "other" was there with them...

James has sex with another girl wail he's supposed to be my man... but he wouldn't have sex with that girl if I was their with them... well depends on how much of a dog he is... Why do a great deal of men cheat???